Two of the world's largest mining firms, Rio Tinto and BHP have been trying to develop Resolution Copper for roughly two ...

Arizona tribal leaders reacted angrily after President Donald Trump said their opposition to a copper mine was un-American.

A federal land swap will have to wait as another legal challenge to a controversial Arizona copper mine makes its way through ...

And under current Arizona law, the mine would win that competition. Resolution Copper has pumped billions of gallons Resolution Copper plans to pump up to 600,000 acre-feet of groundwater ...

The only reason Resolution Copper is in position to benefit from Arizona’s weak groundwater law is because of a rider attached to a defense spending bill passed in December 2014 that was ushered ...

Trump criticized a federal appeals court ruling that temporarily blocked a land transfer needed for Rio Tinto and BHP’s ...